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Clarify LiquidAI to ChessLFM model lineage

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  1. self-play-refresh/README.md +4 -0
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@@ -13,3 +13,7 @@ Fine-tuned after one self-play data-refresh round, mixing student-reached positi
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  Released reference scored 15/32 in this block. This result is not directly comparable with the later-block evaluations.
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  This checkpoint uses the ChessLFM chess-specific tokenizer. For legal move masking, board prompt construction, and search, see the project implementation at https://github.com/0xrushi/ChessLFM.
 
 
 
 
 
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  Released reference scored 15/32 in this block. This result is not directly comparable with the later-block evaluations.
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  This checkpoint uses the ChessLFM chess-specific tokenizer. For legal move masking, board prompt construction, and search, see the project implementation at https://github.com/0xrushi/ChessLFM.
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+ ## Model lineage
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+ Direct starting checkpoint: [mlabonne/LFM2.5-230M-Chess](https://huggingface.co/mlabonne/LFM2.5-230M-Chess). That upstream checkpoint was itself built from [LiquidAI/LFM2.5-230M-Base](https://huggingface.co/LiquidAI/LFM2.5-230M-Base). This experiment therefore descends from LiquidAI's pretrained base through ChessLFM; it did not start directly from the LiquidAI base weights or from random initialization.